<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<link rel="stylesheet" href="css/bootstrap.min.css"/>
	</head>
	<body>
		<div class="container">
			<!--
				
			
			<div class="btn-group">
				<button type="button" class="btn btn-info dropdown" data-toggle="dropdown">
					按钮式下拉菜单
					<span class="caret"></span>
				</button>
				<ul class="dropdown-menu" role="menu">
					<li><a href="#">1</a></li>
					<li><a href="#">2</a></li>
					<li><a href="#">3</a></li>
					<li><a href="#">4</a></li>
					<li><a href="#">5</a></li>
				</ul>
			</div>
			-->
			<!--
			<div class="btn-group">
				<button type="button" class="btn btn-info">分裂式下拉菜单</button>
				<button type="button" class="btn btn-info dropdown" data-toggle="dropdown">

					<span class="caret"></span>
				</button>
				<ul class="dropdown-menu" role="menu">
					<li><a href="#">1</a></li>
					<li><a href="#">2</a></li>
					<li><a href="#">3</a></li>
					<li><a href="#">4</a></li>
					<li><a href="#">5</a></li>
				</ul>
			</div>
			-->
			<!--箭头向上dropup-->
			<div class="btn-group dropup">
				<button type="button" class="btn btn-info btn-lg">分裂式下拉菜单</button>
				<button type="button" class="btn btn-info dropdown btn-lg" data-toggle="dropdown">

					<span class="caret"></span>
				</button>
				<ul class="dropdown-menu" role="menu">
					<li><a href="#">1</a></li>
					<li><a href="#">2</a></li>
					<li><a href="#">3</a></li>
					<li><a href="#">4</a></li>
					<li><a href="#">5</a></li>
				</ul>
			</div>
			<div class="btn-group">
				<button type="button" class="btn btn-info">分裂式下拉菜单</button>
				<button type="button" class="btn btn-info dropdown" data-toggle="dropdown">

					<span class="caret"></span>
				</button>
				<ul class="dropdown-menu" role="menu">
					<li><a href="#">1</a></li>
					<li><a href="#">2</a></li>
					<li><a href="#">3</a></li>
					<li><a href="#">4</a></li>
					<li><a href="#">5</a></li>
				</ul>
			</div>
			<div class="btn-group">
				<button type="button" class="btn btn-info btn-sm">分裂式下拉菜单</button>
				<button type="button" class="btn btn-info dropdown btn-sm" data-toggle="dropdown">

					<span class="caret"></span>
				</button>
				<ul class="dropdown-menu" role="menu">
					<li><a href="#">1</a></li>
					<li><a href="#">2</a></li>
					<li><a href="#">3</a></li>
					<li><a href="#">4</a></li>
					<li><a href="#">5</a></li>
				</ul>
			</div>
			<div class="btn-group">
				<button type="button" class="btn btn-info btn-xs">分裂式下拉菜单</button>
				<button type="button" class="btn btn-info dropdown btn-xs" data-toggle="dropdown">

					<span class="caret"></span>
				</button>
				<ul class="dropdown-menu" role="menu">
					<li><a href="#">1</a></li>
					<li><a href="#">2</a></li>
					<li><a href="#">3</a></li>
					<li><a href="#">4</a></li>
					<li><a href="#">5</a></li>
				</ul>
			</div>
		</div>
		<script type="text/javascript" src="js/jquery.min.js"></script>
		<script  type="text/javascript" src="js/bootstrap.min.js"></script>
	</body>
</html>
